RT.com reported North Korea is sitting on around 200 different minerals, including a large number of rare earth metals, like tungsten. As quoted in the market news:
North Korea’s is set to have the world’s second-largest magnesite reserves, and its tungsten deposits are almost the world’s sixth-largest. The country also holds sizeable deposits of coal, iron ore, gold, zinc, copper, limestone, molybdenum, and graphite. About 40% of the 138 Chinese companies registered as doing business in North Korea in 2010, are engaged in extracting minerals, according to the U.S. Korea Institute at Johns Hopkins University.